<template>
  <el-container>
    <!-- 头部区域 -->
    <el-header>
      <div>
        <img src="../assets/heima.png" alt="" />
        <span>电商后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside width="200px">
        <!-- 侧边栏菜单区域 -->
         <!-- unique-opened 是menu属性中的方法是否只保持一个子菜单的展开，有二种写法，第一种是直接写上默认为true，第二种是属性绑定的形式：:unique-opened='true' -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#ffd04b"
          unique-opened
        >
          <!-- 一级菜单 -->
          <el-submenu
            :index="item.id + ''"
            v-for="item in menulist"
            :key="item.id"
          >
            <template slot="title">
              <!-- 字体图标采用了属性绑定对象的形式，采用了js基础中,点数组,的形式存储 -->
              <i :class="iconsObj[item.id]"></i>
              <span>{{ item.authName }}</span>
            </template>

            <!-- 二级菜单 -->
            <el-menu-item
              :index="item.id + ''"
              v-for="subItem in item.children"
              :key="subItem.id"
            >
              <i class="el-icon-menu"></i>
              <span>{{ subItem.authName }}</span>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main>Main</el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      //   这里采用了键值对的形式: 125就是data中的：值，iconfont就是字体图标中的：对
      iconsObj: {
        125: "iconfont icon-user",
        103: "iconfont icon-tijikongjian",
        101: "iconfont icon-shangpin",
        102: "iconfont icon-danju",
        145: "iconfont icon-baobiao",
      },
    };
  },
  created() {
    this.getMenuList();
  },
  methods: {
    logout() {
      // 清除sessionStorage中的token
      window.sessionStorage.clear();
      //   然后跳回去login
      this.$router.push("/login");
    },
    // 获取所有的菜单
    async getMenuList() {
      const { data: res } = await this.$http.get("menus");
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg);
      this.menulist = res.data;
      console.log(res);
    },
  },
};
</script>

<style scoped lang="less">
.el-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}
.el-aside {
  background-color: #373d41;
//   解决边边的突出的部分
   .el-menu {
    border-right: none;
  }
}
.el-main {
  background-color: #eaedf1;
}
.iconfont {
  margin-right: 10px;
}
</style>
